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Cheap flights from Ontario to Illinois from C$ 193

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Illinois departing on 28/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Find the cheapest flights from Ontario to Illinois

Cheap round-trip flights

Enter your travel dates to find the best prices.
Porter Airlines Logo
1:40 p.m. - 2:35 p.m.
YTZ
-
ORD
1h 55mdirect
Porter Airlines Logo
11:45 a.m. - 2:25 p.m.
ORD
-
YTZ
1h 40mdirect
C$ 292Porter Airlines
Mon, 19 Oct - Mon, 2 Nov
Air Canada Logo
8:05 a.m. - 9:00 a.m.
YYZ
-
ORD
1h 55mdirect
Air Canada Logo
9:50 a.m. - 12:35 p.m.
ORD
-
YYZ
1h 45mdirect
C$ 293Air Canada
Thu, 23 Jul - Mon, 27 Jul
Air Canada Logo
12:15 p.m. - 1:21 p.m.
YTZ
-
ORD
2h 06mdirect
Air Canada Logo
2:00 p.m. - 4:53 p.m.
ORD
-
YTZ
1h 53mdirect
C$ 293Air Canada
Wed, 12 Aug - Mon, 17 Aug
Porter Airlines Logo
1:45 p.m. - 2:35 p.m.
YTZ
-
MDW
1h 50mdirect
Porter Airlines Logo
10:20 a.m. - 1:00 p.m.
MDW
-
YTZ
1h 40mdirect
C$ 293Porter Airlines
Thu, 13 Aug - Sun, 16 Aug
Delta Logo
12:09 p.m. - 6:33 p.m.
YYZ
-
MDW
7h 24m
1 stop
Delta Logo
1:25 p.m. - 11:03 p.m.
MDW
-
YYZ
8h 38m
1 stop
C$ 342Delta
Sun, 9 Aug - Mon, 17 Aug
Delta Logo
6:10 a.m. - 12:38 p.m.
YYZ
-
MDW
7h 28m
1 stop
Delta Logo
9:19 a.m. - 5:24 p.m.
MDW
-
YYZ
7h 05m
1 stop
C$ 353Delta
Sat, 25 Jul - Wed, 29 Jul
WestJet Logo
12:13 p.m. - 6:38 p.m.
YYZ
-
MDW
7h 25m
1 stop
WestJet Logo
9:34 a.m. - 5:25 p.m.
MDW
-
YYZ
6h 51m
1 stop
C$ 376WestJet
Fri, 18 Sep - Mon, 21 Sep
WestJet Logo
4:15 p.m. - 6:38 p.m.
YYZ
-
MDW
3h 23m
1 stop
WestJet Logo
5:50 p.m. - 11:04 p.m.
MDW
-
YYZ
4h 14m
1 stop
C$ 377WestJet
Fri, 4 Sep - Tue, 8 Sep
American Airlines Logo
8:40 a.m. - 2:20 p.m.
YOW
-
ORD
6h 40m
1 stop
American Airlines Logo
8:09 a.m. - 2:55 p.m.
ORD
-
YOW
5h 46m
1 stop
C$ 556American Airlines
Sat, 29 Aug - Tue, 1 Sep
American Airlines Logo
8:40 a.m. - 2:20 p.m.
YOW
-
ORD
6h 40m
1 stop
American Airlines Logo
8:03 a.m. - 2:55 p.m.
ORD
-
YOW
5h 52m
1 stop
C$ 584American Airlines
Fri, 18 Sep - Sun, 20 Sep

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American Airlines flights from Region of Ontario to Illinois

Our best American Airlines deals on Region of Ontario to Illinois flight tickets
American Airlines
8 Sep
YYZ11:39 a.m.Toronto Pearson Intl
2h 05m
ORD12:44 p.m.Chicago O'Hare Intl
9 Sep
ORD8:05 a.m.Chicago O'Hare Intl
5h 54m
1 stop
YYZ2:59 p.m.Toronto Pearson Intl
C$ 332
American Airlines
21 Jul
YYZ6:02 p.m.Toronto Pearson Intl
7h 27m
1 stop
ORD12:29 a.m.Chicago O'Hare Intl
23 Jul
ORD5:58 a.m.Chicago O'Hare Intl
5h 01m
1 stop
YYZ11:59 a.m.Toronto Pearson Intl
C$ 366
American Airlines
23 Jul
YYZ11:00 a.m.Toronto Pearson Intl
7h 30m
1 stop
ORD5:30 p.m.Chicago O'Hare Intl
26 Jul
ORD8:29 p.m.Chicago O'Hare Intl
1h 52m
YYZ11:21 p.m.Toronto Pearson Intl
C$ 418

Air Transat flights from Region of Ontario to Illinois

Our best Air Transat deals on Region of Ontario to Illinois flight tickets
Air Transat
23 Jul
YTZ1:45 p.m.Toronto Island
1h 50m
MDW2:35 p.m.Chicago Midway
27 Jul
MDW10:25 a.m.Chicago Midway
1h 40m
YTZ1:05 p.m.Toronto Island
C$ 339
Air Transat
23 Jul
YTZ8:50 a.m.Toronto Island
1h 50m
MDW9:40 a.m.Chicago Midway
27 Jul
MDW3:20 p.m.Chicago Midway
1h 40m
YTZ6:00 p.m.Toronto Island
C$ 346
Air Transat
2 Sep
YTZ1:40 p.m.Toronto Island
1h 55m
ORD2:35 p.m.Chicago O'Hare Intl
8 Sep
ORD7:00 a.m.Chicago O'Hare Intl
1h 40m
YTZ9:40 a.m.Toronto Island
C$ 347

momondo Fare Finder

 
Customize your flight search to find flights from Region of Ontario to Illinois that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 96,600 searches. Data last updated 9 July 2026.
Use the filters below to find and compare flights from Ontario to Illinois that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

TorontoChicago

YTZ - ORD

YTZORD

Toronto Island

Mon 19/10

1:40 p.m.-2:35 p.m.

Nonstop1h 55m

Chicago O'Hare Intl

Mon 2/11

11:45 a.m.-2:25 p.m.

Nonstop1h 40m

C$ 292

TorontoChicago

YYZ - ORD

YYZORD

Toronto Pearson Intl

Thu 23/7

8:05 a.m.-9:00 a.m.

Nonstop1h 55m

Chicago O'Hare Intl

Mon 27/7

9:50 a.m.-12:35 p.m.

Nonstop1h 45m

C$ 293

TorontoChicago

YTZ - ORD

YTZORD

Toronto Island

Wed 12/8

12:15 p.m.-1:21 p.m.

Nonstop2h 06m

Chicago O'Hare Intl

Mon 17/8

2:00 p.m.-4:53 p.m.

Nonstop1h 53m

C$ 293
Quickest round-trip

TorontoChicago

YTZ - MDW

YTZMDW

Toronto Island

Thu 13/8

1:45 p.m.-2:35 p.m.

Nonstop1h 50m

Chicago Midway

Sun 16/8

10:20 a.m.-1:00 p.m.

Nonstop1h 40m

C$ 293

TorontoChicago

YYZ - MDW

YYZMDW

Toronto Pearson Intl

Sun 9/8

12:09 p.m.-6:33 p.m.

1 stop7h 24m

Chicago Midway

Mon 17/8

1:25 p.m.-11:03 p.m.

1 stop8h 38m

C$ 342

TorontoChicago

YYZ - MDW

YYZMDW

Toronto Pearson Intl

Sat 25/7

6:10 a.m.-12:38 p.m.

1 stop7h 28m

Chicago Midway

Wed 29/7

9:19 a.m.-5:24 p.m.

1 stop7h 05m

C$ 353

TorontoChicago

YYZ - MDW

YYZMDW

Toronto Pearson Intl

Fri 18/9

12:13 p.m.-6:38 p.m.

1 stop7h 25m

Chicago Midway

Mon 21/9

9:34 a.m.-5:25 p.m.

1 stop6h 51m

C$ 376

TorontoChicago

YYZ - MDW

YYZMDW

Toronto Pearson Intl

Fri 4/9

4:15 p.m.-6:38 p.m.

1 stop3h 23m

Chicago Midway

Tue 8/9

5:50 p.m.-11:04 p.m.

1 stop4h 14m

C$ 377

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Sat 29/8

8:40 a.m.-2:20 p.m.

1 stop6h 40m

Chicago O'Hare Intl

Tue 1/9

8:09 a.m.-2:55 p.m.

1 stop5h 46m

C$ 556

OttawaChicago

YOW - ORD

YOWORD

Ottawa

Fri 18/9

8:40 a.m.-2:20 p.m.

1 stop6h 40m

Chicago O'Hare Intl

Sun 20/9

8:03 a.m.-2:55 p.m.

1 stop5h 52m

C$ 584

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Illinois from

How to get the cheapest flight ticket from Region of Ontario to Illinois

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Illinois?

In general, September is the cheapest month to fly from Region of Ontario to Illinois. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around C$ 363. If you don’t want to visit Illinois in September, then you should wait until August to fly from Region of Ontario, when ticket prices are also cheap, with an average price of C$ 371.

What is the cheapest day to depart on your flight to Illinois?

According to our data, Friday is the cheapest day to fly to Illinois from Region of Ontario. The lowest ticket price found for a Friday departure recently was C$ 720. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. The most expensive day to fly to Illinois is Tuesday, with ticket prices averaging around C$ 1,099.

What is the cheapest time of day to depart on your flight to Illinois?

Our most recent data shows that the best time of day to fly to Illinois is in the evening. Flights from Region of Ontario to Illinois during this time can be as low as C$ 766. If you have a flexible travel schedule, then try to avoid flying at noon when prices are C$ 1,137 on average. Flights to Illinois from Region of Ontario at noon are generally more expensive because this time of day is more convenient for travellers’ schedules.

What is the cheapest Ontario to Illinois flight route?

Fly from Toronto Island to Chicago Midway for the best Ontario - Illinois flight prices

How far in advance should I book a flight from Ontario to Illinois?

You are more likely to see cheaper flights to Illinois from Region of Ontario when booking weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around C$ 430 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from Region of Ontario for as low as C$ 248 on momondo.

What cabin class options are available on Region of Ontario to Illinois flights?

There are 4 cabin classes available to choose from on Region of Ontario to Illinois flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Cheap Region of Ontario to Illinois flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Region of Ontario to Illinois

Best price found

C$ 176

Fastest flight time

1h 50m

Direct flights

Every day

Airports in Illinois

98 airports
The best one-way flight to Illinois from Region of Ontario in the past 72 hours is C$ 176. The best round-trip flight deal from Region of Ontario to Illinois found on momondo in the last 72 hours is C$ 296.
The fastest flight from Region of Ontario to Illinois takes 1h 50m
Direct flights go from Region of Ontario to Illinois every day.
There are 98 airports in Illinois. From Region of Ontario there are direct flights to Chicago Midway (MDW).
Search flight deals

Frequently asked questions about flying from Ontario to Illinois

  • When did momondo last update prices for flights from Ontario to Illinois?

    Prices for flights from Ontario to Illinois are refreshed on a daily basis.

  • How many operators does momondo search for flights from Ontario to Illinois?

  • How old do you have to be to fly from Ontario to Illinois?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Ontario to Illinois.

  • What documentation or ID do you need to fly to Illinois?

    The necessary travel and health documents for your Illinois trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Region of Ontario to Illinois?

Best airlines flying from Region of Ontario to Illinois

Compare and see reviews for airlines that fly from Region of Ontario to Illinois with momondo
Airline
Rating
Free Cancellation
Price
Air CanadaPriceFrom C$ 137Free CancellationRating
7.1
11,323 reviews
Search Air Canada flights
Porter AirlinesPriceFrom C$ 201Free CancellationRating
7.9
442 reviews
Search Porter Airlines flights
American AirlinesPriceFrom C$ 256Free CancellationRating
7.1
11,792 reviews
Search American Airlines flights
United AirlinesPriceFrom C$ 268Free CancellationRating
7.4
9,960 reviews
Search United Airlines flights
WestJetPriceFrom C$ 378Free CancellationRating
7.2
3,404 reviews
Search WestJet flights

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Illinois?

It is quick and easy to find Ontario to Illinois flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Illinois that suits you.

Can I find flights from Ontario to Illinois with flexible booking policies on momondo?

Flights from Ontario to Illinois with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Ontario to Illinois?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Illinois from Ontario.

I’m not ready to book a flight from Ontario to Illinois right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Illinois from Ontario. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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Find better results for your trip to Illinois

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